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US 2026/0115412 A1Published application
Catheter assembly and related methods
AssigneeExcision Medical, Inc.
InventorsDavid Alexander WOOD, Janarthanan SATHANANTHAN, Greg Alan WALTERS, Philip J. HAARSTAD
Life of this patent
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Abstract
The present disclosure is an assembly and related method that allows laceration of a valve leaflet.
Claims52
A catheter assembly, comprising:
- a catheter having a proximal end, a distal end, and an inner channel that extends from the proximal end to the distal end;
- and
- a cutting assembly having a cutting element, the cutting element having a sharp tip and a cutting portion that extends relative to the sharp tip in a proximal direction away from the sharp tip, wherein the cutting assembly is configured to transition from a retracted configuration, where the cutting element is contained within the channel, into a curved configuration, where the cutting element extends out of the distal end of the catheter into a curved shape to facilitate laceration of a leaflet.
A method for lacerating a leaflet of a heart valve, comprising:
- inserting a catheter into an aorta;
- advancing a cutting element from within a channel of the catheter toward a base of the leaflet in a distal direction until a distal sharp tip of the cutting element punctures the leaflet;
- after the distal sharp tip punctures the leaflet, causing a portion of the cutting element that extends through the leaflet to transition into a curved configuration;
- retracting the catheter in a proximal direction with the cutting element in the curved configuration to lacerate the leaflet;
- and
- retracting the cutting element into a channel of the catheter.
3 more elements
A catheter assembly, comprising:
- an outer catheter having a proximal end, a distal end, a first channel that extends from the distal end toward the proximal end, and a port that opens to the first channel;
- an inner catheter having a second channel, the inner catheter being sized and configured to slide within the first channel with the proximal end configured to exit through the port;
- and
- a cutting assembly disposed in the second channel, wherein the cutting assembly is configured to lacerate a leaflet.
1 more element
A surgical assembly, comprising:
- an elongated body having a proximal end, a distal end, and an inner channel that extends from the distal end toward the proximal end in a proximal direction;
- a flexible elongated body carried in the inner channel and having a distal end;
- and
- a cutting element carried by the flexible elongated body, the cutting element having a distal cutting tip at the distal end of the flexible elongated body, and a cutting portion that is positioned relative to the distal cutting tip in the proximal direction,
- wherein the cutting element is configured to transition from a retracted configuration, where the cutting element is contained within the inner channel, into a cutting configuration, where the distal cutting tip extends out of the distal end of the elongated body to pierce a leaflet, and the cutting portion is positioned toward the proximal direction to facilitate laceration of a leaflet.
2 more elements
A surgical assembly for insertion at or near a valve in a heart, the assembly comprising:
- an elongated body having a proximal end, a distal end, and an inner channel that extends from the distal end toward the proximal end in a proximal direction;
- and
- a cutting assembly movable in the inner channel, the cutting assembly having a flexible elongated body with a distal end, and a cutting element having a distal cutting tip at the distal end of the flexible elongated body, and a cutting portion that is positioned relative to the distal tip in a proximal direction away from the distal cutting tip,
- wherein the cutting assembly is configured to transition from a retracted configuration, where the cutting element is contained within the channel, into a cutting configuration, where the distal cutting tip extends out of the distal end of the elongated body and the cutting portion is positioned toward the proximal direction to facilitate laceration of a leaflet of a valve when the distal end of the elongated body is positioned at or near the leaflet.
1 more element
A surgical assembly for insertion at or near a valve in a heart, the assembly comprising:
- an outer elongated body having a proximal end, a distal end spaced from the proximal end, and a first channel that extends from the distal end toward the proximal end in a proximal direction;
- an inner elongated body having a proximal end, a distal end spaced from the proximal end of the inner elongated body, and a second channel that extends from the distal end of the inner elongated body toward the proximal end of the inner elongated body in the proximal direction, where in the inner elongated body is configured to move within the first channel with the proximal end of the inner elongated body configured to exit the first channel;
- and
- a cutting element carried by and being movable relative to the second elongated body, the cutting element having a distal tip configured to puncture and a leaflet and a curved portion configured to lacerate a leaflet of the valve,
- wherein the cutting element is configured to transition from a retracted configuration, where the cutting element is contained within the second channel, into an extended configuration, where the curved portion of the cutting element extends out of the distal end of the inner elongated body to facilitate laceration of the leaflet.
2 more elements
Dependencies are inferred from the claim text.